I always wonder how bus conductors manage to be so sharp! The way they shout continuously, push and pull people and collect tickets, it seems that they have unrelenting source of energy. How do they manage to remember who all have already taken tickets in over-crowded buses? Just to check, once I took ticket and moved to another section of crowd that had just boarded in the bus. The conductor came and gave tickets to everyone and simply ignored my physical presence!! And mind you, the bus was crowded to full with 20+ people checking in and out at every stop. Hail Conductors!!